It is not always possible to finish the surface of a slab before it has fully cured. It is possible to add water (aka "blessing the slab") to prolong curing time on the surface. However, this can negatively alter the slump of the slab, deteriorating concrete performance. Finishing aides are treatments designed to prolong this curing time, allowing for greater ease of finishing. Finishing aides can also have positive effects on concrete chemistry and performance.